EVENT_JSON:{"standard":"nep171","version":"1.0.0","event":"nft_transfer","data":[{"old_owner_id":"2bccca7db233316149669709af844156875e0989c2a11bad03572749fdd6ad28","new_owner_id":"d5afea5624cf0237e37534ca94e1fbf53b3ebcaaad34d1bf548deb1ad60b50cd","token_ids":["4251"]}]}